I tend to use my Clan Emblem most of the time which is 3 playing cards, 5, 2 & Ace as the clan is called 52 ACES.... the idea came from another member and was then tweeked by myself and llewellyn237__. Failing that I use my Watchmen badge with blood on it, this I made back in BLOPS 1 but have since seen videos on youtube for it.